Tester Abbreviations
EDIS ABBREVIATIONSABBREVIATION DEFINITION
PIP Profile Ignition Pickup (Crankshaft sensor signal)
IDM Ignition Diagnostic Monitor (Diagnostic signal to EEC-IV)
SAW Spark angle Word (EEC spark control signal)
IGN GND Ignition Ground (Low current ground reference)
VRS- Variable Reluctance Sensor negative
VRS+ Variable Reluctance Sensor positive
VRS Shield Variable Reluctance Sensor shield
BAT+ Battery positive
GND or BAT- Battery negative
VBAT Ignition power to components
C1, C2, C3 Coil Drive (For coils 1, 2, 3, and 4)
OVERLAY DESIGNATORS
PREFIX/ MEASUREMENT
SUFFIX LOCATION
Prefix "J "is a breakout box jack
Suffix "E" is at the EDIS module
Suffix "S" is at the sensor"
Suffix "C" is at the coil